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Erschienen in:
01.04.2013 | Original Article
Association of bladder pain syndrome/interstitial cystitis with urinary calculus: a nationwide population-based study
Erschienen in: International Urogynecology Journal | Ausgabe 4/2013
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Introduction and hypothesis
Although one prior study reported an association between bladder pain syndrome/interstitial cystitis (BPS/IC) and urinary calculi (UC), no population-based study to date has been conducted to explore this relationship. Therefore, using a population-based data set in Taiwan, this study set out to investigate the association between BPS/IC and a prior diagnosis of UC.
Methods
This study included 9,269 cases who had received their first-time diagnosis of BPS/IC between 2006 and 2007 and 46,345 randomly selected controls. We used conditional logistic regression analysis to compute the odds ratio (OR) and its corresponding 95 % confidence interval (CI) for having been previously diagnosed with UC between cases and controls.
Results
There was a significant difference in the prevalence of prior UC between cases and controls (8.1 vs 4.3 %, p < 0.001). Conditional logistic regression analysis revealed that cases were more likely to have been previously diagnosed with UC than controls (OR = 1.70; 95 % CI = 1.56–1.84) after adjusting for chronic pelvic pain, irritable bowel syndrome, fibromyalgia, chronic fatigue syndrome, depression, panic disorder, migraine, sicca syndrome, allergy, endometriosis, and asthma. BPS/IC was found to be significantly associated with prior UC regardless of stone location; the adjusted ORs of kidney calculus, ureter calculus, bladder calculus, and unspecified calculus when compared to controls were 1.58 (95 % CI = 1.38–1.81), 1.73 (95 % CI = 1.45–2.05), 3.80 (95 % CI = 2.18–6.62), and 1.83 (95 % CI = 1.59–2.11), respectively.
Conclusions
This work generates the hypothesis that UC may be associated with BPS/IC.